100% make more sense.
A community is but one use case of everything that can happen in nostr.
The difference is that with topic-based relays you could use all your existing clients for the different things within the context of that topic.
Middle-East microblogging
Middle-East long-form content
Middle-East communities
Middle-East highlights
You could even have a specific profile data for your npub (same npub!) that focuses on the stuff related to your persona within the "Middle-East" topic.